Set Excel Default Save Format to XLSX
Why You Need to Stop Saving as .XLS Immediately - Discover Talent News // DISCOVER TALENT Productivity Hacks Stop Saving as .XLS: The 60KB Mistake Slowing Down Your Analytics Why a simple change in your default Excel settings can reduce file size by 85% and supercharge your workflow. DT By Discover Talent Team December 05, 2025 It is a habit many of us picked up years ago. You open Excel, you do your work, and you hit save. But if you are still saving your spreadsheets in the legacy .XLS format, you are inadvertently sabotaging your storage space and processing speed. Welcome to Discover...